<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>Hello World</title>
    <!-- 引入react核心库 -->
    <script src="https://unpkg.com/react@18/umd/react.development.js"></script>
    <script src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"></script>
    <!-- Don't use this in production: -->
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
  </head>
  <body>
    <div id="root"></div>
    <script type="text/babel">
      const vDom =  <h1>Hello, world!</h1>;
      const container = document.getElementById('root')
      const root = ReactDOM.createRoot(container)
      root.render(vDom)
      // ReactDOM.render(vDom,document.getElementById('root'))
    </script>
  </body>
</html>